{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["else", "employee of", "cities of residence"], "input": "superstar Rihanna says she will perform a new song called Stranded with rapper Jay-Z and  U2  's  The Edge  and Bono at Friday's Hope for Haiti telethon in London ."}
{"else": [], "employee of": [{"subject": "U2", "object": "The Edge"}], "cities of residence": []}